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Kunal Ghosh

Clock Tree Networks are Pillars and Columns of a Chip.

With these series of lectures, we have explored on-site concepts applied in VLSI industry. It is a One-Stop-Shop to understand industrial VLSI circuits.

The videos will develop an analytical approach to tackle technical challenges while building Clock Tree.

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What's inside

Learning objectives

  • Cts quality checks (skew, power, latency, etc.)
  • H-tree
  • Quality check of h-tree
  • Clock tree buffering
  • Buffered h-tree
  • H-tree with uneven spread of flops
  • Advanced h-tree for million flops
  • Power aware cts (clock gating)
  • Static timing analysis with clock tree

Syllabus

INTRODUCTION
Introduction to Clock Tree Synthesis
Clock Tree Quality Check Parameters
Skew and Pulse Width Check
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Duty Cycle and Latency Check
Latency and Power Check
Power Check Continued
Power and Crosstalk Quality Check
Delta Delay Quality Check
Glitch Quality Check
H - Tree
H-Tree Algorithm and Skew Check
H-Tree Pulse Width and Duty Cycle Check
H-Tree Latency and Power Check
Clock Tree Modelling and Observations
Clock Tree Modelling
Clock Tree Building
Clock Tree Buffering
Clock Tree Observations
Buffered H - Tree
H-Tree Buffering Observations
H-Tree Skew Check
H-Tree Pulse Width Check and Issues with Regular Buffers
CMOS Inverter PMOS/NMOS Switching Resistance Difference
CMOS Inverter PMOS/NMOS Matching Switching Resistance Solution
H-Tree with Clock Buffers and Pulse Width Check
H-Tree Duty Cycle, Latency and Power Checks
Dynamic Power and Short Circuit Power
Leakage Power
Conclusion
Conclusion and next topics!
Interview Questions

Buffer Levels
Latency
Clock Gating
Setup Slack
Setup Slack - I
Short Circuit Power
Delay Table
Leakage Current
Total Chip Power

Good to know

Know what's good
, what to watch for
, and possible dealbreakers
Covers Clock Tree Network quality checks, which is standard in industry
Taught by Kunal Ghosh, who is recognized for their work in VLSI
Develops concepts and skills for building Clock Trees, which is a core industrial skill
Examines Quality Checks, which is highly relevant to building Clock Trees

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in VSD - Clock Tree Synthesis - Part 1 with these activities:
Review Digital Integrated Circuits
Review key ideas in digital integrated circuits to strengthen your foundation for this course.
Show steps
  • Read through the first four chapters of the book.
  • Summarize the key concepts of each chapter in your own words.
Solve practice problems on clock tree quality checks
Strengthen your understanding of clock tree quality checks by solving practice problems.
Show steps
  • Find a set of practice problems on clock tree quality checks.
  • Solve the problems and review your answers.
Build a simple clock tree for a small circuit
Practice the concepts of clock tree design by creating a basic implementation in Verilog.
Browse courses on Verilog
Show steps
  • Design a small digital circuit with multiple registers.
  • Write a Verilog module to implement the clock tree for your circuit.
  • Simulate your design to verify its functionality.
Two other activities
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Show all five activities
Create a presentation on clock tree synthesis techniques
Develop a deeper understanding of clock tree synthesis by exploring different techniques and presenting your findings.
Show steps
  • Research various clock tree synthesis techniques.
  • Create a presentation that explains the advantages and disadvantages of each technique.
  • Present your findings to a group of peers or mentors.
Develop a clock tree optimization tool
Apply your knowledge of clock tree design to create a tool that can optimize clock trees for specific metrics.
Show steps
  • Design and implement algorithms for clock tree optimization.
  • Develop a user interface for your tool.
  • Test and validate your tool on a variety of circuits.

Career center

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